51746731 has 2 divisors, whose sum is σ = 51746732. Its totient is φ = 51746730.

The previous prime is 51746699. The next prime is 51746741. The reversal of 51746731 is 13764715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51746731 - 2⁵ = 51746699 is a prime.

It is a super-2 number, since 2×51746731² = 5355448338372722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51746741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25873365 + 25873366.

It is an arithmetic number, because the mean of its divisors is an integer number (25873366).

Almost surely, 2^51746731 is an apocalyptic number.

51746731 is a deficient number, since it is larger than the sum of its proper divisors (1).

51746731 is an equidigital number, since it uses as much as digits as its factorization.

51746731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 51746731 is about 7193.5200701743. The cubic root of 51746731 is about 372.6441488260.

The spelling of 51746731 in words is "fifty-one million, seven hundred forty-six thousand, seven hundred thirty-one".